Method of making insoles



Sept. 8, 1936. G GODDU 2,053,331

METHOD OF MAKING INSOLES Original Filed Nov. 20, 1931 ZZvzQi Fl Z AVE/VTUQ.

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Patented Sept. 8, 1936 V UNETED STATES PATENT OFFICE 2,053,331 METHOD OFMAKING INSOLES George Goddu, deceased, late of Winchester, Mass, byIsabelle W. Goddu, executrix, Winchester, Mass, assignor to TheLittleway Process Company, Lynn, Mass., a corporation of MassachusettsOriginal application November 20, 1931, Serial No. 576,342. Divided andthis application April 13, 1934, Serial No. 720,451

23 Claims. (Cl. 36-22) This invention relates to the art of shoemakingthe lip to render it more resistant to the outward and is disclosedherein by way of illustration with pull of upper materials which are tobe secured in reference to insoles adapted for use in the manulastedrelation to the lip. Accordingly, a stiffenfacture of shoes the uppersof which are secured ing medium is applied to the lip after the insolein overlasted relation to sole members by cement has become dry.Preferably the stiffening me- 5 and to methods of making such insoles.The dium is applied to the outer face only of the lip presentapplication is a division of a copending which, however, may include theshoulder portion application Serial No. 576,342, filed Nov. 20, 1931, ofthe lip. A solution of shellac containing acein the name of George Goddu(Patent No. 2,017,- tone has been found to be very suitable for use as856, granted October 22, 1935) which is directed the stiffening medium,though, of course, other l0 to improvements in methods of making shoes,stiffening agents may be employed if desired.

Objects of the present invention are to provide The drying of thestiffening material upon the improved insoles which will be particularlysingle lip of the insole causes the lip to be so adapted to meetconditions found in the commerstiffened and strengthened that it offerssufficient cial manufacture of shoes of the type referred to resistanceto being bent outwardly adequately to l5 and which will presentadvantages in the way of withstand the outward pull of the uppermateeconomy; and to provide an improved method rials of a shoe afterthey have been worked into adapted for use in making such insoles.lasted position and secured to it.

Considering the invention first in its article or Preferably, the outerflap split from the insole insole aspect, the illustrated insole, whichprefin the channeling operation should be made sub 20 erably is ofleather, has a single integral lip at stantially equal in thickness tothe thickness of each side of the insole extending from toe to the uppermaterials which are to be used in the breast line, the continuity of thelip being broken shoe, and, of course, by turning the flap inwardly atthe toe. Both lips extend inwardly with their a shoulder is provided atthe inner edge of the bases located at a considerable distance in from ru ed m r in r fe 0 h insole against 5 the edge of the insole to providea wide feather which a shoe upp y be Wiped 0 a t e portion. Preferably,the feather portion is repp W l have its inner marginal portion locatedduced in thickness an amount equal to the thickin upstanding relation tothe insole. This insures ness of the upper materials to be employed inthe that an upper which has been secured in lasted h portion f th t i lt from th relation to the insole will be in a convenient posi- 3Ofeather portion being preferably utilized to form tion for trimming. theinwardly projecting lip. The lip may have The above and other aspects ofthe invention on its outer face a stiffening material such as willappear m fully from the following detailed shellac which renders the lipstiffer and more description n read n c nnection with the resistant tooutward bending in response to the companying drawing and will bepointed out in 5 tension of a lasted upper which is to be secured theappended claims.

thereto. In the drawing,

Considering the invention now in its method Fig. 1 is a sectional detailview illustrating the aspect as applied to the manufacture of theinsole, channeling operation upon the insole; an outside channel isfirst made, for example, by Fig. 2 is a similar vi w f h inso e after th.40

channeling inwardly from the edge face of the l p is turned? insoleparallel to its bottom face a sufficient disg- 3 is a p pective view ofthe insole showtance to form a wide feather. A portion, for ing itsouter face and illustrating the application example half, of the outerflap thus formed is of a stiffening medium to the exposed surface oftrimmed off, and this operation may advantagethe lip. 45 ously beperformed simultaneously with the chan- In the illustrated method ofmaking insoles the neling operation. After tempering the insole, theinsole may first be provided with an outside chanremainder of the outerflap is turned upwardly nel, that is, a channel out from an outer porandinwardly to a position such that it lies subtion of the insole inwardly.As illustrated in stantially flat against the bottom of the insole Figs.1, 2 and 3, an insole 20, preferably of and forms a lip to whichoverlasted upper mateleather, is channeled inwardly from its edge facerials may be secured. While a lip thus formed to form a feather surface22 parallel to its bottom and set in its inwardly turned conditionpossesses face for a distance equal to the amount it is desufiicientresistance to meet some conditions, it is sired to have a shoe upperoverlap the margin of 5 desirable under other conditions further tostiffen the insole, for example, from three -eighths to about half aninch at the forepart, the channel extending inwardly seven-sixteenths ormore at the portion of the shank adjacent to the breast line. Thechannel out should preferably be spaced from the outer face of theinsole a distance substantially equal to the thickness of the uppermaterials of the shoe in which the insole is to be used. The outerportion 26 of the outer flap 24, formed by the channeling operation, istrimmed off and this may be done simultaneously with the channelingoperation. The forepart of the insole may be flexed by forming thereinthe usual slashes 28. To facilitate turning the outer flap 24 over uponthe insole, the toe portion of the flap is snipped off, as indicated inFig. 3, before the flap is turned to form a shoulder portion 30 and thissnipping may be effected by a reciprocating knife extending across thetoe of the insole at a distance from its end equal to the width of thefeather 22, the action of the knife being so limited that it does notcut into the feather portion but only through the outer flap. Thatportion of the outer flap 24 at the end of the toe which would interferewith the turning inwardly of the side portions of the flap is thusremoved and a space is provided between the bases of the two flaps atthe toe end of the insole. The insole is next tempered by applyingmoisture to its outer face and is then subjected to a lip turningoperation by which the outer flap 24 is turned inwardly over upon thebody of the insole and pressed fiat, as shown in Figs. 1 and 2, theouter flap thus forming a lip or rib 24 (Figs. 2 and 3) to which alasted upper may be secured. When, after the turning operation, theinsole has become sufiiciently dry, a stiffening medium is applied tothe outer surface of the lip or rib 24, as indicated by stippling inFigs. 2 and 3. Since this surface is substantially parallel to the planeof the bottom of the insole and is raised therefrom by an amount equalto the thickness of the lip, the stiffening solution may conveniently beapplied to the outer face of the lip Without liability of getting thesolution on the feather of the insole where it would interfere with theadhesion of the cement which is to be used in securing an upper theretoand without liability of getting the solution on the interior portion ofthe insole where it would tend to stiffen the portion of the insolewhich it is desired to maintain as flexible as possible. The solutionmay be also applied to the shoulder portion 36 of the insole.

While various materials, such as glue or pyroxylin cement, may beemployed as the stiffening medium, a solution of shellac, alcohol andacetone substantially in the following proportions has been found to bemost satisfactory for that purpose:

Denatured alcohol quarts 3 Shellac pounds 3 Acetone pound 1 Thissolution may conveniently be applied by hand, a small stiff brush 32having its bristles cut off square being convenient for the purpose.While, as illustrated, the stiffening solution is applied onlyto theouter surface of the lip 24, including if desired the shoulder portion38, the solution, by reason of its actone content, tends to penetratedeeply into the fibers of the leather, the lip being thus impregnatedwith the stiffening material. In order to stiffen the shank and heelportions of the insole, it may be split from its'rear end to a pointadjacent to the ball line,

about where the insole begins to widen at the forepart, and a piece offiberboard 34 may then be inserted in the split portion as shown in Fig.3, the fiberboard being preferably secured in position by cement such,for example, as water-dispersed rubber cement or latex.

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent of the United States is:

1. An insole having a reduced feather portion and an inwardly extendinglip of less width than the feather, said lip being disposed against theouter face of the insole and being set in that position with the aid ofa stiffening medium to cause the lip to resist being brought to anupright position.

2. An insole having a wide feather portion of reduced thickness and alip of approximately onehalf the width of the feather, said lipextending inwardly from the inner edge of the feather and being stifferthan the body of the insole so that it lies substantially flat againstthe outer face of the insole.

3. An insole having a reduced feather portion and a lip of less widththan the feather formed from an outer portion of the insole, said lipextending inwardly and lying flat against the outer face of the insoleand having its outer portion impregnated with stiffening material.

4. An insole having an integral lip extending inwardly and lyingsubstantially flat against the surface of the insole, said lip beingimpregnated with shellac.

5. An insole having an inwardly disposed lip substantially parallel tothe surface of the in sole, and lip stiffening material upon the outerface of the lip.

6. An insole having a lip formed from a portion of the outer margin ofthe insole, said lip being disposed substantially flat against the outerface of the insole and having its outer portion impregnated with a lipstiffening material.

7. An insole having a lip formed from an outer portion of the margin ofthe insole, said lip being disposed substantially fiat against the outerface of the insole and having its exposed face impregnated with shellac.

8. An insole having a wide feather portion extending around the marginof the insole from breast line to breast line, and a lip at each side ofthe insole extending inwardly from the inner edge of the feather, saidlips being discontinuous at the toe with their ends in'close proximityand being stiffer than the rest of the insole so the full widths of thelips an upright position.

9. That improvement in methods of making insoles which consists inchanneling in from the edge face of an insole parallel to its innerface, removing the outer part of the outer flap thus formed, temperingthe insole, turningthe remaining portion of the outer flap inwardly fiatagainst the surface of the insole, and allowing the insole to dry andthe lip to become set in that position.

10. That improvement in methods of making insoles which consists informing a lip 'on an insole by an outside channeling operation, andfoldwill resist being brought into ing the lip thus formed inwardly tocause the lip insoles which consists 'in formingalip onan inin methodsof making sole by an outside channeling operation, folding the lip thusformed inwardly, and applying to the outer face of the lip a lipstiffening medium.

12. That improvement in methods of making insoles which consists inchanneling from the outer portion of an insole inwardly to form a lip,turning the lip inwardly flat against the surface of the insole, andapplying stiffening material to the exposed face of the lip.

13. That improvement in methods of making insoles which consists informing a lip on an insole by an outside channeling operation, foldingthe lip thus formed inwardly against the surface of the insole therebyforming a feather and a shoulder on the margin of the insole, andapplying to the outer face of the lip only a solution of shellaccontaining acetone to impregnate and stiffen the lip.

14. That improvement in methods of making insoles which consists inchanneling in from the edge face of an insole parallel to the inner facethereof and removing substantially half of the outer flap thus formed,turning the remaining portion of the outer flap inwardly substantiallyflat against the surface of the insole, and impregnating the outerportion of said flap with stiffening material.

15. That improvement in methods of making insoles which consists informing a lip on an insole by an outside channeling operation, foldingthe lip thus formed inwardly against the surface of the insole, andapplying to the outer face of the lip a solution of shellac to stiffenthe lip.

16. That improvement in methods of making insoles which consists informing a lip on an insole by an outside channeling operation, foldingthe lip thus formed inwardly against the surface of the insole, andapplying to the outer face of the lip a solution of shellac containingacetone to stiffen the lip.

17. That improvement in methods of making Insoles which consists inchanneling in from the edge face of an insole parallel to its inner faceto form an outer flap substantially equal in thickness to the thicknessof upper materials for a shoe, removing the outer portion of the flapthus formed, turning the remaining portion of the flap inwardly againstthe surface of the insole, and impregnating the exposed surface of theflap with shellac to stiffen it.

18. That improvement in methods of making insoles which consists inchanneling in from the edge face of an insole parallel to its inner faceto form an outer flap substantially equal in thickness to the thicknessof upper materials for a shoe, removing the outer half of the flap thusformed, turning the remaining portion of the flap inwardly against thesurface of the insole, and impregnating the exposed surface of the flapwith stiffening material.

19. That improvement in methods of making insoles which consists inchanneling in from the edge face of an insole parallel to its outer faoesubstantially three-eighths of an inch, removing the outer portion ofthe flap thus formed, turning the remaining portion of the flap inwardlyflat against the surface of the insole, and applying stiffening materialto the exposed face of the flap.

20,. That improvement in methods of making insoles which consists inchanneling in from the edge face of an insole parallel to the innerface, removing half of the outer flap thus formed, tempering the insole,turning the remaining portion of the outer flap inwardly fiat againstthe surface of the insole, and, after the insole is dry, impregnatingthe outer portion of said lip with stiffening material.

21. That improvement in methods of making insoles which consists inchanneling in from the edge face of an insole parallel to its inner facesubstantially three-eighths of an inch, removing the outer half of theflap thus formed, turning the remaining portion of the flap inwardly,causing it to lie flat against the surface of the insole, and applyingstiffening material to the outer surface only of the flap.

22. That improvement in methods of making insoles which consists informing a lip on an insole by an outside channeling operation, foldingthe lip thus formed inwardly against the surface of the insole to form afeather or shoulder outside the lip, and applying to the outer face ofthe lip a solution of shellac containing acetone to impregnate andstiffen the lip.

23. That improvement in methods of making insoles which consists inchanneling in from the edge face of an insole parallel to its inner faceto form an outer flap substantially equal in thickness to the thicknessof upper materials for a shoe, removing half of the outer flap thusformed, turning the remaining portion of the outer flap inwardly flatagainst the outer surface of the insole, and impregnating the outerportion of the flap with stiffening material.

ISABELLE W. GODDU. Executria: of the Will of George Goddu, Deceased.

